Welcome to Email OTP: Your Fast and Simple Email Authentication OTP Solution!

Email OTP is a Flutter package designed to simplify email authentication through one-time passwords (OTPs). With Email OTP, you can effortlessly generate OTPs and send them to your users' email addresses, ensuring secure identity verification.

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Table of Contents

‣ Getting Started

To get started, import the email_otp package in your Flutter project:

import 'package:email_otp/email_otp.dart';

‣ Usage

Initialize the EmailOTP class:

EmailOTP myAuth = EmailOTP();

‣ Configuration

Configure your OTP authentication settings using the setConfig method:

myAuth.setConfig(
    appEmail: "[email protected]",
    appName: "Email OTP",
    userEmail: email.text,
    otpLength: 6,
    otpType: OTPType.digitsOnly
);
  1. appEmail: Your personal or company email address, visible to clients when they receive OTPs.
  2. appName: Your app's name, displayed to clients in the email.
  3. userEmail: The recipient's email address where the OTP needs to be sent.
  4. otpLength: The length of the OTP (e.g., 6 digits).
  5. otpType: Choose from OTPType.digitsOnly, OTPType.stringOnly, or OTPType.mixed for different OTP formats.

‣ Customizing Email Templates (Optional)

You can customize your email template using the setTemplate method. If not used, the default template provided by Email OTP will be used.

var template = 'YOUR HTML CODE HERE';
myAuth.setTemplate(
    render: template 
);

In your HTML, use placeholders like {{app_name}} and {{otp}} to display the app name and OTP. For example:

Thank you for choosing {{app_name}}. Your OTP is {{otp}}.

‣ Configuring Custom SMTP (Optional)

Configure your SMTP settings using the setSMTP method if you want to send OTPs from a custom email address. Make sure your SMTP credentials are correct. Test your SMTP configuration at smtper.net.

myAuth.setSMTP(
    host: "smtp.rohitchouhan.com",
    auth: true,
    username: "[email protected]",
    password: "*************",
    secure: "TLS",
    port: 576
);
  1. host: Your SMTP hostname.
  2. auth: Boolean (true/false) indicating if SMTP authentication is required.
  3. username: Your SMTP email address.
  4. password: Your SMTP email password.
  5. secure: Choose from "TLS" or "SSL" for secure connections.
  6. port: Port number of your SMTP email server.

‣ Email Theme

We already have a few good and beautiful email templates. To assign a theme, you need to use the setTheme method with the parameter of the theme version. If you do not use this function, it will automatically take the latest theme.

myAuth.setTheme(
    theme:"v3"
);
Theme Parameter Theme Design
v1
v2
v3

‣ Sending and Verifying OTPs

Use the following methods to send and verify OTPs:

‣ Sending OTP

await myAuth.sendOTP();

‣ Verifying OTP

var inputOTP = 987654; // OTP entered by the client after receiving the email
await myAuth.verifyOTP(
    otp: inputOTP
);

‣ Complete Example

Find a complete example in the Email OTP package documentation.

‣ Reporting Bugs or Issues

Feel free to open a ticket on GitHub if you encounter any problems. We also welcome new ideas and suggestions.

‣ Copyright and License

Copyright © 2023 Rohit Chouhan. Licensed under the MIT LICENSE.

Libraries

email_otp